Stitch separating and indenting machine.



L. F. KiNE. Smau sinmms AND momma MACHINE.

APPLICATON HLE DEC. 5' 9|2 1.?2325427. Patented July 3, 1917.

2 SHEETS- SHEET l.

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G. F. KEENE.

sflTcH SEPAHATING AND INDENUNG MAcHm.

AiPLlCATION FILED DEC. 5. NH2.

1,232,427. Patented Ju "lQlT- WWW 2. C. WM. f5@

UNITED STATESY PATEET OFFICE.

GEGRGE F. KEENE, F WHITMAN, MASSACHSETT, SSIGNOR T0 NITEB SHOE MACHINERY GOMPNY, OF PATERSN, NEW ERSEY, A CORPORATION OF NEW JERSEY.

Specification of Letters Patent.

Patented July 3, 1917.

Application ined December 5, I'iz. Serial No'. #35A-H.

To all 'whom t may concern: Y

Be it known that I, F. Keene, a citizen of the niiedf States, residing et Whihnan, in the county oi Plymouth and State of Massachusetts, have r'nfente'd 'certain new and useful Improvements in Siiteh Separating and ndenting Machines; enel l do hereby declare the following to he :1. fin, clear, and exact cleseripton ef the invention, such as will enable other Skillf in the art to which it eppertaine to: ineke znl use the seme. f i

This invention relates to Inehine jei" iiidenting the interval hetweenetheeehes ef a Finished seam, and' foi` Shaping 'lie Crowns of he stitches se as te impart eY uniform and nisleci appeerenee te the seem. Such machines are known in heeit s siihzh seperting and in'dening machines. Y Y

One ohjecF of the present invention is to procluee a stitch separaing infening machine for inclenfing the intevae between nthe stitches of a finished seein o'nseperete he stitches and for shaping' the crewns of the stitches; in a novel and imiirniyeclV manner. ln certain classes of high-priced shoes the outsole is etteched to the insole' by means of i n veryr course unwaxed threa' which is sewn in comparatively long sticchele-V1 Ystitches of the seam formed with 15h13 ennigseY un- Waxed thread in ihe above manner, as they appear along the upper surfee of the Welt,V

are very white uml this aeceuni, and be'- canse ofY the eoerseness and loose texture of the thr'ei, impart e striking and attrrctve appearance to the Lipper s'lirfeee of the @nierY margin of the sole. It has' been found thai by rst indenti'ngrthe Vinterval between the Stiehes of a' Seem' Sewefl with Wax thread.,Y nncl 1then finishing"v flown the ,crowns of the stitches which have previously heen; separated while the generation between {hem ieY substantiallyVuuobstrnete, the stitch seperations aire pzfiii'eliy ohlitgera'te, and fhe tliree'clv ai lthe erowns of the siitches is liet? tened ois'queshed oui, Se e 'te canee the seein io' appear very sinrlaro e' sewed with coarsej onieerxeil ihifenf, en@ it is an,- other 'ehjeef'efY Ythe inientien orpreflnee a slitch seperng and l'd'errlgg for orfrning he ehoveeperaerene. l

'Wife 'the above eb'ecte in view, the inven-Y ten eemprses eerefin nevel 'andi' engraved feeeme elerly eet foren in ene elowng deeerileion 2simi poincfefl ont in the claims eppendel thereto, the advantages of which will be obifions to those skille in the art.

The features of the invention will be reali ily understood' from an nepeciinn of the aeeenlpenying drawings teh-'en eoniieeiien Wiih fire following leseripiinn.Y

In *ille flrafng's illnsreing the invention in itspleferrf'l forni; Figire l is e front elevation :if if' elfi-ich Separating' and indenting ,aehie einholying the invention;

Fig; Q is detail front eieveion of the lowrfor Vzielig'; portion of an' indenting tool;

Fig. 3 is (eifl View in side elevation of the {rei-ing portieri of lie' tool;

Fig. 4 is a1 diagrammatic View illustre# ing* the acting portion of the tool and the margin of ille sole of ihe shoe in section and showing the action of the fool upon the stitches; and Y Y Y Fig. V5 is a (lingi'animefic View Showing the marginal poi'io of the Sole in plan and illuetraing the eeet of the iool upon the stitches. Y

Vith the exception of the indentng roel the parte ef the machine illustrated in the dran-'ings are the seme in construction, errengenfieiiIV nnl.mode of operation a'srthe eorresponiiiing 'parte of the machine illustratori in ihe patent to Hadnwny No. 543,012, dated july Q3, $95, to which patent referenee ineiy be had for a` full funi complete description of the parte which are het briefly (leeiiiied in this appliceiion.

lnV che drawings, l Yinclieeies the lower werk support, 2 the upper werft support which; engages the upper 'snrface of the margin of'he sole, and 3 the edge gage for engegeinent with the edge of the Soie. 4 is the? tool Stoch upon which the inflenti'ng tool is supported, 5 theV lever nii-on which the tool stock is pivoelly mounted, 6 the spring which acts on fire lever 5 to press the tool lightly against; the wink during the locating movements ofthe tool. l the feed Slide by which the feeding movements aire irnpate'te the tool, 8 the presser lever which efues he'lever 5 to force the tool iiilio fhe 'fo'k, Sndnihe lever which ctw altes the lever 5 to reise the tool from the Work. Y

During' the' eyee of operation off the machine. 'frtingf immediately after #he ee movement of the work has taken place, the indenting tool is first moved lightly into eugageinent with the worli, then has certain lateral or locating movements imparted thereto to cause the indenting blade to find the interval between the stitches, is then forced into the work with considerable pressure to separate the stitches, is thereafter inoved laterally to feed the work, and is tin-ally raised ont ol' engagement with the work. These movements are the same as the movements in'ipart'cd to the tool in the machine ot' the patent referred to above.

As illustrated in Figs. Q and 3, the indenting tool is provided with an indenting blade l0 for insertion in the interval between the stitches to separate the stitches and with a surface 11 arranged in advance of the indenting blade or extending` from the indent ing blade in the direction of the feed movement of the work for engaging and shaping the crown of at least one stitch in advance of the indenting blade while the indenting blade is located in the interval between two stitches. The crown engaging surface 11 of the tool is preferably Hat or nearly so, and is arranged substantially perpendicular t0 the indenting blade.

lu the sewing machine at present in commercial use for sewing` outsoles to the uppers of boots and shoes. the longest stitch which can be made upon the machine is substantially one-eighth of an inch in length7 and the indenting tool of the present invention is preferably constructed so that when operating upon a seam having eight stitches to an inch, the crown shaping surface 11 of the tool will extend over the first. stitch in advance of the indentingl blade and at least half way over the crown of the second stitch in advance of the blade while the indenting blade is located in the interval bctween two stitches. The tool might be constructed so that the surface 11 extended completely over the second stitch in advance of the blade. but it has been found that a tool constructed in accordance with the preferred embodiment of the invention as above stated, produces the desired effect in shaping the crown of the stitches. lt will also be apparent that when the machine is operating upon a seam having more than eight stitches to the inch the surface 11 of the tool will extend more than half way over the crown of the second stitch in advance of the indenting blade.

The manner in which the finished seam is acted upon by the tool will be apparent from an inspection of Figs. 4 and 5. lVhen the tool is forced lightly against the work the blade 10 rests upon the tops of the stitches` the other portions of the tool being supported out of contact therewith. As the locating movements are imparted to the tool the blade l0 finds the interval between two .stitches and rests therein in the usual 1nauner. lllheu the tool is forced down on to the work the iiulenting blade is forced into the interval between two stitches to separate the stitches7 and the surface l] of the tool engages, crushes down and shapes the crowns of the two stitches in advance of the indentiirg blade in the direction of the feed movement of the worlr. Fig. t shows the position of the tool with relation to the work after the indenting blade has been forced into the work. The stitches indicated at a, e and d have been previously separated h v lthe indenting tool` and the erowl'is of the stitches a and b have been completely shaped by the tool. The crown ofthe stitch c receives its final shaping while the iudenting blade is located in the interval between the stitches (Z and e to separate the stitches. as shown in Fig. 4^. The crown of the stitch rl is partially shaped by t'hc crown engaging surface of the tool while the indenting blade is located in the interval between the stitches d and e, and will receive its final shaping when the indenting blade is indenting the interval between the stitches c and f to separate these stitches. Prior to the actuation of the iudentiug tool to force the indenting blade down into the interval between the stitches d and e, the crowns of the stitches c and al had substantially the forms of the crowns of the stitches (l and c respectively.y as shown in Fig. 4;; that is, the crown of the stitch r was crushed` down Hat. the stitch interval to the left of the stitch c was nearly obliterated. a separation of substantially the same width and shape as the separation between the stitches d and e as shown in Fig. fl appeared bc'- twecn the stitches c and (I. and the crown of the stitch Z had substanti:dhv the natural rounded shape of the stitch c. When the tool ias actuated to force the indenting blade down into the interval between the stitches d and c, the flat crown shaping surface of the tool engaged and crushed down the crown of the stitch r? and also engaged the right-hand portion of the crown of the stitch fl, the resiliency of the material having caused the crown ol this stitch to ri se slightly after having been previous crushed down by the tool. lt is to be noted that while the crown shaping surface of the tool is engaged. with the crowns of the stitches c and fl, the interval between these stitches is unobstructed by any portion of the indenting tool. Therefore. when the crowns of these stitches are crushed down by the crown shaping surface of the tool, both the thread of the seam and the leather at the crowns of these stitches are forced into the space previously made by the indenting blade between the stitches to partially obliterate the previously made separation as clearly shown in Fig. 4. The complete and llt) final action of the tool on each stitch is therefore to square or block up the crown ot' the stitch.

The action of the tool upon the thread ot' the seam is clearlT shown in Figs. 4 and 5. The tlat crown shaping surface ot' the tool when it engages the crown of the stitch tiattens or sqnashes ont the thread, and at the same time sqseezes more or less of the wax ont of the thread. The thread at the crown oi the stitch is therefore spread ont in the manner shown in Fig. 5, and appears coarser and looser in texture than bct'ore. Since much of the Wax, which gives a rather darli coior to the thread, is pressed ont of the thread by the action ot the indenting tool, the thread at the crowns ot the stitches shows its natural White color after the seam is acted upon by the tool. After the margin of the sole is acted upon by the indenting` tool it presents a. very uniform, striking and attractive appearance, the indentations between the stitches made by the indcnting blade still showing slightijf on the surface of the welt, the crowns of the stitches having been blocked up in a uniform manner, and the seam resembling very closelv a seam sewed with coarse white nnwaxed thread.

Having explained the natnre and object of the invention, and having specifically described a machine embodying the invention in its preferred form. what is claimed is l. A stitch separating and indenting inachine, having in combination, an indenting tool provided with a stitch separating blade and a substantialbY iiat surface arranged perpendicular to the indenting blade and extending entirel)T over the crown of the stitch in advance of the indenting blade to shape the crown of the said stitch while the indenting blade is indenting the interval between two stitches, and means constructed and arranged to actuate the tool with sufficient torce to indent the intervais between the stitches and to shape permanently the crowns of the stitches.

2. A stitch separating and indenting machine, having in combination, an indenting tool provided with a stitch separating blade to the stitch intervals, and a snbstantiallv iat surface arranged perpendicular to the indenting blade to engage and shape the crowns ot two stitches in advance of the indenting blade While the indenting blade is indenting the interval between two stitches, and means constructed and arranged to actnate the tool with sufficient force to indent the intervals between the stitches and to shape permanently the crowns of the stitches.

A stitch separating and indenting niachine, having in combination, an indenting tool provided with a blade tor insertion in the intervals between the stitches and with a substantially [iat surface for engaging and shaping the crowns of two previously separated stitches in advance ot the blade while the blade is indenting the interval between two stitches, and means constructed and arranged to actuate the tool with suiiicient force to indent the intervals between the stitches and to shape permanently the crowns of the stitches.

4. A stitch separating and indenting machine, having, in combination, an indenting blade for indenting the intervals between the stitches of a finished seam to separate the stitches, crown shaping means to crush down the crowns of the separated stitches While the previously made separations between the stitches are substantially unobstructed to partially obliterate the separations between them, and mechanism constructed and arranged to actuate the indenting biade and the crown shaping means with sniiieient force to indent the intervals between the stitches and to shape permanently the crowns of the stitches.

5. A stitch separating and indenting ma.A chine, having, in combination, an indenting biade for indenting the intervals between the stitches to separate the stitches, crown shaping means for flattening down the crowns ot' the stitches after the).Y have been separated, and mechanism constructed and arranged to actnate the 'indenting blade and crown shaping means with snfiicient force to indent the intervals between the stitches and to shape permanentlyT the crowns of the stitches.

6. A stitch separating and indenting machine, having, in combination, means for indenting the interval between two stitches to separate the stitches and for crushing down the crowns of the stitches after they have been separated, and positively acting mechanism for actuating said means.

GERGE F. KEENE.

Witnesses:

Rosanna CALLANAN, HARRISON D. SoULn.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

